How do I restrict the currently logged in user to only see products that belong to them?

问题

If a user is logged in with a specific role - vendor - they should only see items that they have created in their store. They should not be able to see products from other vendors.

So I am trying to do this in my authorization (using Devise, CanCan, Rolify).

I tried this:

user ||= User.new # guest user (not logged in)
if user.has_role? :vendor
  can :dashboard
  can :manage, [Product, Vendor], :vendor_id => user.id
  can :view, [Product], :vendor_id => user.id
end

But....haven't had much luck with that...what am I missing?

Edit 1

I know that I can restrict the products in the controller like:

 @product = current_user.products

But that's not what I am looking for. In this case, a vendor (i.e. user with role :vendor) should only be able to see products they added to the store, but they shouldn't be able to see products that other vendors add. However, a buyer (i.e. a user with role :buyer) should be able to see all the products from all buyers (as will an admin/etc). A buyer won't be able to see the prices, and some other attributes on some of the products, etc.

How can I achieve all of that?

回答1:

In the controller you can only find the products belonging to that user.

def show
  @product = @user.products.find(params[:id])
  ...

Same applies to edit and update action. Cancan in this case is not required.

来源：https://stackoverflow.com/questions/15407491/how-do-i-restrict-the-currently-logged-in-user-to-only-see-products-that-belong